Study on a fiber-optic gradient hydrophone based on interferometer

被引：1

作者：

Lv, Wenlei ^{[2
]}

Pang, Meng ^{[3
]}

Shi, Qingping ^{[1
]}

Zhang, Min ^{[1
]}

Liao, Yanbiao ^{[1
]}

Yuan, Libo ^{[2
]}

Kang, Chong ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, E Main Bldg 11-303, Beijing 100084, Peoples R China

[2] Harbin Engn Univ, Coll Sci, Harbin, Peoples R China

[3] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong, Peoples R China

来源：

2008 INTERNATIONAL CONFERENCE ON OPTICAL INSTRUMENTS AND TECHNOLOGY: OPTICAL SYSTEMS AND OPTOELECTRONIC INSTRUMENTS | 2009年 / 7156卷

关键词：

fiber-optic sensor; gradient hydrophone; directivity; SENSITIVITY;

D O I：

10.1117/12.805496

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We proposed a kind of fiber-optic gradient hydrophone based on interferometer. Two arms of the interferometer are sensing fibers, each of which can be regard as a scalar pressure sensing element, and then the phase gradient between the two elements is transformed into the light intensity modulated output by the coupler. In this paper, a suit of analytical models for researching the sensor performance are developed. The theoretical and experimental research was carried out to demonstrate this kind of gradient hydrophone's phase sensitivity as the function of the measure frequency and the "8" directivity response.

引用

页数：7

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